The documentary went through a timeline of drummers in chronological order, paying the right amount of respect to every drummer that it covered, starting with the old jazz greats before shifting gear into Rock specific territory for the rest of its run time. Ringo Starr, Charlie Watts, Keith Moon, John Bonham and Roger Taylor, right up to Dave Grohl. Everyone you'd expect is touched on... Except Neil Peart, which frankly I just don't understand, especially with him passing away only last year. Anyone who knows Rock n Roll would count him as a top 5 drummer, he is every bit as influential and inspiring to young drummers as any of the others covered, in fact more so than most. It really seems like he was deliberately omitted for some reason and they could've easily squeezed him in, especially when Keith Moon is covered TWICE, and there's a kinda forced feministy bit at the end with drummers that... be honest... no one has really heard of. They at least could have talked about Meg White for that part, a female drummer who is a respected household name, and another pretty egregious omission, especially during the girl power bit. So yeah, I enjoyed it, and it wasn't a bad documentary, I would recommend it, but omitting Peart is like omitting Eddie Van Halen from a doc about guitarists.